This package has specified only one S3 class named
"openmpt". It is an external pointer (type of
externalptr) that points to the location where the OpenMPT
module object is stored in memory. It is stored in a format that can be
handled by the libopenmpt library and can be used to play or render the
module and control options for playing and rendering.
openmpt class object
The only way to initiate an openmpt class object is by
reading a supported module from a file with read_mod().
There is no point in creating new openmpt objects from
scratch anyway since the package offers no features to modify the module
(see also vignette("openmpt-alternatives")).
library(openmpt)
mod <- read_mod(system.file("cyberrid", "cyberrid.mod", package = "openmpt"))openmpt objects
Each openmpt object holds its own set of control and
render parameters, which can be obtained and modified with
control() and render_param(). You can also
control the volume of specific or all channels (see
?"volume-control"). Pitch and tempo can also be tweaked
(see ?"pitch-tempo"). Use play() to play an
openmpt object, and convert_mod() to convert
it to a specific audio file format.
There are many other functions that use openmpt objects
as input. For a complete overview check the Reference
page.